How to calculate dollar value of transaction fee from Gas price details in Ethereum transaction

Question

I am looking to convert gas fee info from this api end point: into dollars (calculating taxes).

The endpoint gives 'gas', 'gasPrice' and 'gasUsed' values that I'm sure would be enough, but I can't quite work it out.

Answer 1

You can calculate the price in dollars using the following formula:

usdPrice = gasUsed * gasPrice * ethToUsd

You can take the first two parameters (gasUsed and gasPrice) from etherscan. To get the current conversion rate between ETH and USD (ethToUsd) you need to query some exchange API, e.g., https://min-api.cryptocompare.com/.